KENT, N.Y. - A school principal received a surprise delivery of 12 pounds of marijuana from a mysterious sender whose address was traced to a vacant lot in California, police said.

The package was addressed to Joan "Pinserton," a misspelling of the principal's name, Pinkerton. It was delivered Thursday to the Kent Primary School by Federal Express. Pinkerton was immediately suspicious because of a strong odor from the box.

The principal had the box moved to the rear of the school property and an X-ray taken by the bomb squad determined the package wasn't a threat, police Lt. Alex DiVernieri said. Police opened it and found the marijuana, he said.

The return label contained a woman's name and a Gardena, Calif., address but police there said the address turned out to be a vacant lot, and the woman did not exist.